Chemicals
| Mon 25 May 2026
Beijing, May 25 -- Tianjin Steel Pipe Manufacturing has sought patent for Novel Oxide Scale Discharging and Lead Screw Protecting Device of Perforating Machine. This invention was developed by Chen Hongwei, Wei Meidong, Han Baoxin, Guo Hongyu, Yang Ming, Yang Liwei, Wen Lei, Zhao Lijun, Qin Lei, Qiu Zhaokun, Lyu Liang, Zhang Che..